This was a great chapter! The pacing, and everything... Kishi managed to hype us-up for the next couple of chapters.
- We learned that Uchiha Kagami was the father of Uchiha Shisui; which increases the possibility of Obito being Shisui's sibling.
- It seems that Minato's "present" for Naruto is indeed, going to be the other half of Kurama's chakra.
- It's confirmed that Tobirama is going to teleport them there...
- It's might be confirmed that Orochimaru was a part of the enhanced Kabuto (might be a translation error, I'm going to wait for the *********** version.)
As for Sasuke's decision... the way I see it:
Sasuke's change of heart is a double-edged sword, in terms of character development. Simply because, Kishimoto spent too much time building him up as this anti-hero who is forever consumed by hatred; this was rather clear in one of the recent chapters, chapter 574. However, it's definitely acceptable. Because, the reunion he got with his brother Itachi, and the story Hashirama told him, could've been truly enough to influence him in order to make the right choice.
I'm still kind of skeptical about this, though. We shall see...
Overall, a great and an enjoyable chapter of Naruto. 4/5!